PIK3CA and lung adenocarcinoma: EGFR exon20 c.2369 C > T p.(T790M), EGFR exon19 c.2235_2246del p.(E746_E749del), TP53 exon6 c.637 C > T p.(R213*) and PIK3CA exon10 c.1633G > A p.(E545K) mutations were detected in lung adenocarcinoma tissue samples from the proband.